Begin by writing a function called load_grade_book. It takes one string argument, a filename. The file is in CSV format (comma separated values). Data in CSV files is separated by commas. The first value is a student id, which is followed by a series of grades. Build and return a dictionary from the file that maps student id's (strings) to a list of grades (floats). The same student may have more than one line in the file. For example, if the file's content is

The three logical operators used to write compound conditions are "and," "or," and "not." a: true b: false

Which cultural aspect does this type of song best portray? a german polka dance

1. you have a small business that is divided into 3 departments: accounting, sales, and administration. these departments have the following number of devices (computers, printers, etc.): accounting-31, sales-28, and administration-13. using a class c private network, subnet the network so that each department will have their own subnet. you must show/explain how you arrived at your conclusion and also show the following: all available device addresses for each department, the broadcast address for each department, and the network address for each department. also, determine how many "wasted" (not usable) addresses resulted from your subnetting (enumerate them).